"Throughout our evaluation process, we have been committed to following the guidance of public health authorities and given the coronavirus shelter-in-place order in effect in San Francisco, postponement is the best decision for all involved," PGA of America CEO Seth Waugh said in a statement.

"This is a reflection of a thoughtful process. We are and have been working in concert with commissioner Jay Monahan and our partners and friends at the PGA Tour to find an alternative date that works for all. We are all very hopeful for a great outcome.

"We are also in dialogue with Mayor (London) Breed and her team at the City of San Francisco and look forward to hopefully bringing the 2020 PGA Championship to TPC Harding Park at a date this summer when it is once again safe and responsible to do so."

The postponement comes less than a week after the Masters, scheduled to be held April 9-12 in Augusta, Ga., was also postponed.

The PGA Tour has decided to cancel four other tournaments — the RBC Heritage, Zurich Classic of New Orleans, Wells Fargo Championship and AT&T Byron Nelson. That means the season will resume May 21 at the earliest.

The U.S. Open is scheduled to start June 18 and the United States Golf Association is "currently holding the dates" as scheduled.

The coronavirus has killed more than 7,900 people worldwide, with 102 deaths in the United States.